| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2009, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: ucnvavailperf.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2009apr06 |
| * created by: Markus W. Scherer |
| * |
| * Test performance (time & memory) of ucnv_countAvailable(), |
| * for a before-and-after comparison of |
| * ticket 6441: make ucnv_countAvailable() not fully load converters |
| * |
| * Run with one optional command-line argument: |
| * You can specify the path to the ICU data directory. |
| * |
| * I built the common (icuuc) library with the following modification, |
| * switching between old (pre-ticket-6441) behavior of actually |
| * trying to load all converters and new behavior of just doing enough |
| * to test availability. |
| * |
| * Code in the ucnv_bld.c haveAvailableConverterList() function: |
| #if 0 |
| // old pre-ticket-6441 behavior |
| ucnv_close(ucnv_createConverter(&tempConverter, converterName, &localStatus)); |
| if (U_SUCCESS(localStatus)) { |
| #else |
| // new behavior |
| if (ucnv_canCreateConverter(converterName, &localStatus)) { |
| #endif |
| */ |
| |
| #include <malloc.h> |
| #include <stdio.h> |
| #include "unicode/utypes.h" |
| #include "unicode/putil.h" |
| #include "unicode/uclean.h" |
| #include "unicode/ucnv.h" |
| #include "unicode/utimer.h" |
| |
| static size_t icuMemUsage = 0; |
| |
| U_CDECL_BEGIN |
| |
| void *U_CALLCONV |
| my_alloc(const void *context, size_t size) { |
| size_t *p = (size_t *)malloc(size + sizeof(size_t)); |
| if (p != NULL) { |
| icuMemUsage += size; |
| *p = size; |
| return p + 1; |
| } else { |
| return NULL; |
| } |
| } |
| |
| void U_CALLCONV |
| my_free(const void *context, void *mem) { |
| if (mem != NULL) { |
| const size_t *p = (const size_t *)mem - 1; |
| icuMemUsage -= *p; |
| free((void *)p); |
| } |
| } |
| |
| // Not used in the common library. |
| void *U_CALLCONV |
| my_realloc(const void *context, void *mem, size_t size) { |
| my_free(context, mem); |
| return NULL; |
| } |
| |
| U_CDECL_END |
| |
| int main(int argc, const char *argv[]) { |
| UErrorCode errorCode = U_ZERO_ERROR; |
| |
| // Hook in our own memory allocation functions so that we can measure |
| // the memory usage. |
| u_setMemoryFunctions(NULL, my_alloc, my_realloc, my_free, &errorCode); |
| if(U_FAILURE(errorCode)) { |
| fprintf(stderr, |
| "u_setMemoryFunctions() failed - %s\n", |
| u_errorName(errorCode)); |
| return errorCode; |
| } |
| |
| if (argc > 1) { |
| printf("u_setDataDirectory(%s)\n", argv[1]); |
| u_setDataDirectory(argv[1]); |
| } |
| |
| // Preload a purely algorithmic converter via an alias, |
| // to make sure that relevant data can be loaded and to set up |
| // caches and such that are needed even if none of the data-driven |
| // converters needs to be loaded. |
| ucnv_close(ucnv_open("ibm-1208", &errorCode)); |
| if(U_FAILURE(errorCode)) { |
| fprintf(stderr, |
| "unable to open UTF-8 converter via an alias - %s\n", |
| u_errorName(errorCode)); |
| return errorCode; |
| } |
| |
| printf("memory usage after ucnv_open(ibm-1208): %lu\n", (long)icuMemUsage); |
| |
| UTimer start_time; |
| utimer_getTime(&start_time); |
| // Measure the time to find out the list of actually available converters. |
| int32_t count = ucnv_countAvailable(); |
| double elapsed = utimer_getElapsedSeconds(&start_time); |
| printf("ucnv_countAvailable() reports that %d converters are available.\n", count); |
| printf("ucnv_countAvailable() took %g seconds to figure this out.\n", elapsed); |
| printf("memory usage after ucnv_countAvailable(): %lu\n", (long)icuMemUsage); |
| |
| ucnv_flushCache(); |
| printf("memory usage after ucnv_flushCache(): %lu\n", (long)icuMemUsage); |
| |
| u_cleanup(); |
| printf("memory usage after u_cleanup(): %lu\n", (long)icuMemUsage); |
| |
| return 0; |
| } |